Works great - very useful
Diskdeleter - Diskdeleter is data removal software that helps protect your privacy by securely deleting data from your hard drive.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Blancco Drive Eraser - Hard Drive Erasure Software
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
WipeDrive - Download WipeDrive Home for free using discount code: HOMEFREE
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode